Ice-cream disher.



E. WALKER.

ICE CREAM DISHER. APPLICATION FILED 0c.17. 1910.

' 1,138,705. Patented May 11, 1915.

WITNESSES: INVENTOR a W By Eda/m YVaZ/ser EDWIN WALKER, OF ERIE, PENNSYLVANIA.

ICE-CREAM DIsHEn.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed December 17, 1910. Serial No. 597,917.

To all whom it may concern: 7

Be it known that I, EDWIN WVALKER, a citizen of the United States, residing in Erie, county of Erie, and State of Pennsylvania, have invented a certain new and useful IceCream Disher, of which the following is a specification.

This invention is a device for dispensing ice cream, and similar substances, wherein provision is made for removin a scraper easily and quickly from a cup for the purpose of thoroughly cleaning the surfaces of the various parts.

For hygienic and sanitary purposes, it is desirable in devices of this character to, first, incase certain of the operating parts against the accumulation of cream and other substances, and, second, to provide for the removal of the scraper from the cup without relaxing tension of the scraper -actuating spring during the period that said scraper is withdrawn from operative relation to actuating means therefor.

The present invention embodies distinctly novel devices whereby the foregoing objects and others are attained.

One part of the invention embodies means by which a scraper-operating lever is mounted in operative position upon the frame, a spring for actuating the lever, and a boxing for incasing the spring, said boxing or casing being, preferably,removable independently of the lever and the spring, whereby access to the spring is obtainable without disturbing the operatlve connectlon of the spring to the lever or the operative relation of the lever to the frame of the disher.

Another part of the invention embodies a cup provided with a bearing, a scraper operative within said cup and withdrawable therefrom, a stem on the scraper, means for operating the scraper and stem, and means independent of the scraper operating means for retaining the scraper and stem within the cup, said scraper retaining means being, preferably, in the form of a screw occupying a fixed position on the cup and so related to the scraper and the stem that these parts are free to turn relative to said retaining means.

Other features of construction will appear in the course of the annexed detailed description.

In the accompanying drawings I have illustrated one practical embodiment of the .Fig. 2 is a plan view.

invention, but the construction shown therein is to be understood as illustrative, only, and not as defining the limits of the invention. v

Figure l is a view in side elevation of an ice cream disher embodying this invention. Fig. 3 is a vertical cross section on the line 33 of Fig. 1. Fig. 4 is a horizontal cross section on the line 4t-fl; of Fig. 1. Fig. 5 is a vertical cross section on the line 5-5 of Fig. 1.

The implement embodies, mainly, a frame, A, a bowl or cup, B, a scraper, C, a lever, D, and operative connections between the lever and the scraper for transmitting the motion of the lever to the scraper, whereby the latter is rotated within the cup, the operation of the scraper being effected by the thumb or finger of the hand which grasps a handle, a, of the frame.

Frame, A, may be of any suitable construction, preferably of metal. Handle, a, is, preferably, composed of wood, and it is of such shape that it can be gripped firmly in the hand, said handle having a collar, cl, to preclude the handle from slipping, although the form of the handle may be modified, as desired. H

A lug or short arm, E, is provided on frame, A, at a point adiacent to the handle, said lug being either integral with the frame or attached rigidly thereto. The lug extends from a side of the frame, and it affords a secure support for lever. D, and the parts cooperating with said lever. Said lug has a part, c, inclined relative to the frame, see Fig. 5, so that the lug or arm is positioned below the frame, when the device occupies the position illustrated in the drawings.

A post, F, is rigid with lever, D, see Fig. 5. As shown, the post is integral with the lever, but it may be made in a separate piece, and be attached thereto. With said post cooperates the lever, D, a spring, G, a boxing or casing, H, and means for retaining the boxing or casing in operative relation to the post.

As shown, lever, 1), comprises a single piece of metal, either cast or sheet metal, but for economy in manufacture, it is preferred to stamp the lever from sheet metal. Said lever comprises a body portion, arms d,.d, and a lug, d When the lever is composed of cast metal, post, F, is cast thereon, or

otherwise attached rigidly thereto. Arm, cl, of the lever extends adjacent to handle, a, so as to be positioned within convenient reach of the thumb or fingers. Lever arm,

cl, extends across frame, A, and lug, cl lies alongside an edge of lug or arm, E, so as to be held by the action of spring, G, upon the lever into contact with said lug for the purpose of arresting the movement of the lever in the direction in which it is operated by the spring. Various forms of devices may, however, be employed for limiting the movement of the lever in the spring pressed direction. For example, instead of lug, d on the lever, I may provide a lug positioned on the frame in the path of the lever to arrest its movement in the spring pressed direction.

The lever is fitted sidewise against arm or lug, E, as shown in Figs. 1 and 5, the post passing loosely through an opening provided in said lug, whereby the lever is connected pivotally to the frame.

Spring, Gr, is, preferably, a coiled spring. It is positioned loosely upon post, F, and it cooperates with. the post and the lever for operating the latter. As shown, post, F, is provided with a slot, 7, and an axial opening, f, said slot and opening extending lengthwise of the post for a part of its length, and the slot being in communication with the opening, see Fig. 5. One end of spring, G, is fitted in slot, f, of the post, the other end of said spring being extended to form an arm, 9, which acts against fixed lug, E, see Fig. 5, whereby the tension of the spring is applied to rotate post, F, and lever, D, when finger pressure is removed from arm, (Z, of said lever.

Boxing, H, is preferably, cylindrical, and it is positioned to incase post, F, and spring, G. Said boxing is shown as a piece of spun sheet metal, open at one end, and provided at its other end with a cap or head, 72,. At the open end, the cap is provided with a notch (shown in dotted lines in Fig. 5) for the reception of arm, 9, of the spring. The boxing is positioned around spring, G, and post, F, said boxing resting upon lug or arm, E, arm, 9, of the spring fitting in a notch of the boxing, whereby the several parts, are compactly disposed.

It is to be observed that the boxing, in a preferred form, is separate from, or independent of, the spring, the lever and the frame, said boxing being removable at will from the device. The boxing is retained in position by suitable means, such for example, as screw, it, the same having engagement with a female threaded part of opening, 7, post, F. The screw is provided with a shoulder, 7& adapted to rest firmly upon the outer end of post, F. The head of the screw overhangs the cap of the boxing for the purpose of retaining the latter in position. When the screw is turned up for its shoulder to engage firmly with the post, said screw is adapted to rotate with the post but without a tendency to work loose therein due to the frictional engagement of the screwhead with the boxing, whereby the boxing is retained in a stationary position relative to the post and the screw, said parts turning with the lever when it is pressed in one direction by hand and in the other direction by the energy of the spring.

Cup, B, may be of any suitable construc tion and shape; that is to say, said cup may be cast with the frame, or it may be separately constructed and attached rigidly to the frame, and, again, the cup may be conical, bowl shaped, etc. As shown, the cup is provided with a hub or bearing, Z) preferably, integral therewith, said bearing having an axial opening, I), a transverse opening, and a nipple, b the latter being formed with a female threaded hole, 6.

I'designates a rack and J is a pinion constituting one form of operative connection between lever, D, and scraper, C. As shown, rack, I, is a straight rod provided on one side and at one end with rack teeth, 2'. The toothed end portion of the rack is fitted loosely in transverse opening, 6 of the hub or bearing so as to be slidable therein. The other end of the rack is pivotally or loosely connected to lever, l), as, e. 9., by bending an end of the rod to form a pivot, 71, loosely fitting said pivot in an aperture provided in arm, IJZ, of the lever, and upsetting the end of said pivot.

Pinion or gear, J, is provided with flanges, j, at the respective sides of the gear, or at the ends of the gear teeth, whereby the gear is adapted to be fitted in opening I), of the bearing in a manner to rotate freely therein. The gear is thus mounted or journaled in the hub so as to lie therein and be concealed, practically thereby. The toothed part of the rack meshes with the teeth of said gear, said rack fitting between the flanges of the gear, whereby the rack o-p crates to retain the gear in operative position Within the hub or bearing.

In my new construction the gear is not removable'from the hub and the cup when the scraper is withdrawn from said cup, for the reason that the gear is retained in position by the engagement of the rack therewith, said scraper being removable from the cup independently of the gear or pinion.

The gear is provided with an axial opening, 7', which is hexagonal, as shown in Fig. 4:, although it may be square or polygonal, as desired.

Scraper, C, is provided with a stem, C, said stem corresponding in cross section to the shape of the axial opening of the gear, whereby the stem is adapted to be fitted in the gear so as to Secure rotation of the scraper with the gear. The stem is secured rigidly to the scraper in any desired manner, for the purpose of insertion and removal with said scraper, but the operation of removing or replacing the scraper andthe stem does not affect the position of the gear in the cup, for the reason that it is lQtillllGCl therein by the rack.

in my new device, the scraper is retained in operative position within the cup by means independent of, and disconnected from, the scraper-operating means. In one embodiment of the invention, a retaining screw, K, and a grooved collar, L, are employed. Collar, L, forms a part of scraper stem, 0, and it is provided with an annular groove, Z, said collar being positioned within axial opening, Z), of hub, I). As shown, the hub is long enough to accommodate collar, L, and gear, J, the collar occupying the inner end of aperture, Z), and closing the same against the entrance of cream, or other edible product. Screw, K, is threaded into aperture, Z), of nipple, b", so as to be positioned radially with respect to the scraper stem, and as shown, the inner end portion of said screw is reduced so as to form a tenon, K, the latter extending into the annular groove of the collar on the scraper stem. The retaining screw extends outside of the nipple, and it is, preferably, at an angle to the frame and to rack, I, see Figs. 1, 2 and 4, whereby the screw is positioned for convenient access by the fingers in order to rotate it in one direction or the other. If desired, the exposed end of the screw may be provided with a screw driver nick, to receive a screw driver, or other implement, should the screw become wedged in the nipple. Preferably, means are employed for retaining the screw in operative engagement with the nipple on the bowl, thus precluding accidental separation of the screw from the bowl, and possible loss of the screw to the annoyance of the user. As shown in Fig. 4, a part of the screw is cut away, at m, and a pin, m, fixed on the nipple so as to extend between shoulders formed by the cut away part of the screw. The pin enables the screw to be rotated in an outward direction sufficiently to withdraw the tenon from the groove in the stem collar, L, thus permitting the scraper and the stemv to be removed easily from the cup: but any further outward movement of the screw is arrested by pin, m, so that the screw cannot become detached and lost.

It is manifest that the screw is operable independently of the scraper operating means for the purpose of inserting and removing the scraper regardless of the position of the gear,the rack, and the spring pressed lever. Said screw is adjustable to a position free from the grooved collar, whereupon the scraper and stem can be pulled out of the cup, but this does not affect the gear and the other parts of the scraper-operating mechanism, for the reason that the gear, rack and lever are held. at rest by the spring acting on the lever to hold stop, (F, in engagement with lug or arm, E. The scraper and cup may easily be cleaned, and the scraper replaced, the stem sliding into the axial opening of the gear, after which the retaining screw is readjusted into engagement with the grooved collar for retaining the scraper in operative position within the cup, said scraper being connected by the stem operatively with the gear.

hen the scraper is not rotated, the spring acts on the post and the lever to retain the lug, (P, in contact with arm, E, said two parts cooperating as a stop to limit the movement of the lever in that direction in which it is pressed by the spring, whereby the spring is retained under tension in a manner similar to all dishers of the automatic scraper class.

A salient feature of my new disher resides in the ability to remove the scraper without in any way adjusting the scraper operating mechanism, and should the scraper be dis connected, the tension of the spring is not relaxed, thus enabling unskilled persons to remove and insert the scraper without touching the operating mechanism, or affecting its position, or dismantling it. Obviously, the stop lug, 6Z acts to hold the lever at rest when said lever is acted on by the spring to press the lug, (Z against arm, E, and the lever retains rack, I, in such position that it remains in engagement with gear, J Now, screw, K, can be adjusted to release the stem, whereupon the stem and scraper can be removed from the cup, and replaced therein, but this will not in any way affect the gear, rack, lever and spring, whereby the spring remains under tension, during the insertion or removal of the scraper, that is to say, its tension is not relaxed by the act of inserting and removing the scraper.

Another salient feature of my device consists in the means for incasing the spring in order to preclude the lodgment of cream upon the spring and to exclude dust, dirt, etc., from the spring and the lever fulcrum. It is to be observed that the boxing 0r casing has no cooperative relation with the lever and the spring in so far as concerns the action of the scraper operating means, but at the same time, the spring is efiectively incased or housed to protect it from the cream. Furthermore, the boxing is removable and replaceable at will without affecting the spring, the lever, or any other part of the scraper operating mechanism; and, again,

the act of removing and replacing the boxing to incase and expose the spring has no effect upon, or relation to, the stop device by which the movement of the lever is arrested in the spring pressed direction.

Obviously, the retaining screw may be disconnected from the post, and the boxing removed from the device, in order to secure access to the spring and expose it for adjustment, etc. With the boxing removed, the spring can be taken out or it may be adjusted, or a new spring placed in position should the original spring become worn out. It is apparent, furthermore, that the screw attached to the post operates to retain one end 0f the spring in the slot of the post, thus precluding the spring from becoming detached from the post.

IVhile I have shown the device as embodying a casing, it is obvious that said casing may be omitted, if desired. In such event, the spring is exposed to view, but it will be attached at one end to the slot in the post and will be retained therein by the screw attached to the post.

The spring and the screw are combined with the post, the lever and the frame in such manner that the lever and post are retained in operative positions regardless of the employment of the boxing, but when it is desired to push out the post sufficiently for the stop lug (Z of the lever to clear the arm, E, of the frame, the screw is removed sufiiciently for that purpose, but at the same time retains one end of the spring in the slot, thus keeping the spring in operative relation to the post and lever.

The arm, E, is shown in Fig. 5 as entering an aperture in frame, A, and it is held in fixed position by a pin passing through said arm and frame.

Having thus fully described the invention, what I claim as new, and desire to secured by Letters Patent is 1. In a device of the class described, the combination of a frame, a cup, a scraper operable within the cup, a lever on the frame, means connecting the lever and the scraper to allow of the operation of said scraper from the lever, a spring cooperating with the lever, means for limiting the movement of the lever in the spring pressed direction, means coiipe 'ating with the scraper and with the cup for detachably retaining the scraper in the cup, said means being independent of the scraper operating means in the carrying out of its function, and being operable to permit of the removal of the scraper without relaxing the tension of the spring, and means separate from the frame and the lever for incasing said spring.

2. In a device of the class described, the combination of a frame, a cup, a scraper operable within said cup and detachably secured thereto, a lever pivoted to the frame,

means operatively connecting the lever and the scraper, said means being so positioned that the scraper may be removed from the cup while the parts of the scraper operating mechanism are retained in cooperative relation to each other, a spring cooperating with the lever, means for limiting the movement of the lever in the spring pressed direction, and means separate from the frame and the lever for incasing the spring.

3. In a device of the class described, a frame, a cup, a scraper operable within the cup, a lever on the frame, means connecting the lever and the scraper, a spring coopcrating with the lever, means for limiting the movement of the lever in the spring pressed direction, and means for incasing the spring, said spring incasing means being separate from the lever.

4. In a device of the class described, a frame, a cup thereon, a scraper operable within the cup, a lever, scraper operating means connected with the scraper and said lever, a spring acting to press the lever in one direction, a stop device for limiting the movement of the lever in the spring pressed direction, said scraper being removable from the cup without disturbing the operative position of the lever and the spring, and a retaining member independent of the scraper operating means, said retaining member being carried by a fixed part of the cup and cooperating with the scraper for precluding the latter from displacement within the cup. 1

5. In a device of the class described, the combination of a frame, a cup thereon, a scraper operable within the cup, a lever pivoted to the frame, means pivoted to the lever and cooperating with the scraper for operating the same, a spring coiled around the lever pivot and acting to impel the lever in one direction, the scraper being removable from the cup without relaxing the tension of the spring or disconnecting the scraper operating mechanism.

6. In a device of the class described, the combination of a cup, a scraper operable therein, a lever connected to the scraper for operating said scraper, a spring acting on the lever, means cooperating with the scraper and with the cup for detachably retaining the scraper in the cup, said means being independent .of the scraper operating means in the carrying out of its function and being operable to permit of the removal of the scraper without relaxing the tension on the spring, and means separate from the frame and lever for incasing said spring.

7. In a device of the class described, a frame, a cup thereon, a scraper within the cup, a lever on said frame for operating said scraper, a spring coiled around the le- 'ver pivot and acting to impel the lever in one direction, means independent of the lever and the frame for incasing the spring, and means separate from the scraper operating lever for retaining said scraper in operative relation to said scraper operating lever, said scraper being removable from the cup without relaxing the tension of the spring and disturbing the operative position of said lever or the scraper operating means.

8. In a device of the class described, a frame, a cup thereon, a scraper within the cup, a scraper operating lever on saidframe, a spring for moving the lever in one direction, a stop device for limiting the movement of the lever in the spring pressed direction, and means for retaining the scraper in operative relation to the scraper operating lever, said scraper retaining means being disconnected from the scraper operating mechanism and adjustable at will to permit withdrawal of the scraper without disturbing the operative relation to each other of the parts composing said scraper operating mechanism.

9. In a device of the class described, a frame, a cup thereon, a scraper operable within the cup, a finger lever positioned transversely with respect to the frame and pivoted to said frame intermediate its ends, means actuated by the lever for imparting rotative movement to the scraper, a spring for moving the lever in one direction, a stop device for limiting the movement of the lever in the spring pressed direction, and a retaining member independent of the scraper operating means for permitting removal of the scraper without relaxing the tension or the spring, said scraper retaining means being independent of the scraper cooperating mechanism and adjustable at will to permit the withdrawal of the scraper without disturbing the operative relation of the several parts of the scraper operating mechanism.

10. In a device of the class described, a frame, a cup thereon, a scraper operable within the cup, a scraper operating lever on said frame, scraper operating means cooperating with the lever and the scraper, a spring for moving the lever in one direction, said spring being coiled around the pivot of the lever, means independent of the lever and the frame for incasing the spring, a stop device for limiting the movement of the lever in the spring pressed direction, and a retaining member for detachably retaining the scraper in the cup, said means being independent of the scraper operating means in the carrying out of its function, and being operable to permit of the removal. of the scraper independently of the scraper opeating lever and without relaxing the tension of the spring acting thereon.

11. In a device of the class described, a frame, a cup thereon, a scraper operable within the cup, a'scraper operating lever on said frame, scraper operating means cooperating with the lever and the scraper, 'a spring for moving thelever in one direction, a tubular casing separate from the lever, the frame and the scraper operating means for incasing the spring, a stop device for limiting the movement of the lever in the spring pressed direction, and a retaining member independent of the scraper operating means for permitting removal of said scraper independently of the scraper operating lever and without relaxing the tension of the spring acting thereon and without dismantling the scraper operating means.

12. In a device of the class described, a

frame, a cup thereon, a scraper operable within the cup, a scraper operating lever on said frame, scraper rotating means actuated by the lever, a spring for moving the lever in one direction, said spring being coiled around the pivot of the lever, means for arresting the movement of the lever in the spring pressed direction, means separate from the lever, the frame and the scraper operating means for incasing the spring and a scraper retaining member independent of the scraper rotating means in the carrying out of its function, said stop device and the retaining member cooperating in permitting removal and insertion of the sc 'aper without relaxing tension of the spring.

13. In a device of the class described, the combination of a frame, a cup thereon, a scraper operable within the cup, a scraper operating lever fulcrumed on said frame, a rack pivoted to the lever, a gear meshing with the rack for imparting rotative movement to the scraper, a spring for moving the lever in one direction, cooperating means on the lever and the frame for arresting the movement'of the lever in a spring pressed direction, said lever arresting means acting to retain the spring under tension when the scraper is removed from or inserted into the cup, and devices cooperating with the scraper and the cup for retaining the scraper in position relative to the cup, said devices casing the spring, a stop device operable independently of the spring incasing means for limiting the movement of the lever in the spring pressed direction, and a scraper ressi taming member fixed on the cup, said scraper being removable from the cup and said stop device acting independently of the scraper for retaining the spring under tens sion when the scraper is removed and inserted.

15. In a device of the class described, the combination of a frame, a cup, a scraper removable from the cup, scraper operating mechanism including a lever pivoted on the frame, and means separate from the scraper operating mechanism for retaining the scraper in operating position within the cup, said scraper being removable while the parts of the scraper operating mechanism remain retained in operative relation to each other,

16. In a device of the class described, a frame, a cup, a scraper removable from the cup, scraper operating mechanism including a lever and a spring for actuating said lever, and means disconnected from the scraper operating mechanism for retaining the scraper in operative position and for permitting removal of the scraper While retaining the spring under tension, and while the parts of the scraper operating mechanism remain in cooperative relation to each other.

17. In a device of the class described, the combination of a cup, a scraper removably positioned therein, means for rotating the scraper, and means independent of the scraper operating means, in the carryingout of its function, positioned on the cup for mal y e ining he s r per With n th cup, but operable to release the scraper and allow of its removal from the cl p,

18. In a device of the, class described, the combination of a cup, a scraper removably positioned therein, means'for rotating said scraper, a stem on said scraper, and a retaining screw supported on the cup and 00,-. operating with the stem for retaining the scraper in operative position within the cup, said retaining screw being withdrawable from its operative position for the purpose of releasing the scraper and allowing its removal from the cup, and said retaining screw being entirely separate and independent of the scraper operating means the carrying out of its function.

19. In a device of the class described, a

cup, a scraper provided with a grooved st m, means for rotatlng the scraper, a reta ningv screw mounted on the cup and operating in said grooved stem for normally retaining the scraper within the cup, but operable to release the scraper and allow of its removal therefrom, said retaining screw being separate and independent of the scraper operating means in the carrying out of its fun-e tion.

20-. In a device of the. class described, a cup, a removable scraper provided with a stem, a gear fitted removably to. the stem,

and a scraper operating member cooperating with the gear and adapted to retain it in operative relation to the cup upon the removal of the scraper.

21. In a device of the class described, a cup, a removable scraper provided with a stem, a gear fitted removably to the stem, a scraper operating member cooperating with the gear and adapted to retain it in operative relation to the cup upon the removal of the scraper, and scraper retaining means supported on the cup and cooperating with the scraper for retaining-said scraper within the cup.

22. In a device of the class described, a cup provided with a bearing, a gear positioned within the bearing, a scraper, a stem rigid with the scraper and fitted removably in the gear, a scraper operating member cooperating with the gear for retaining it within the bearing upon the removal of the scraper and the stem, and retaining means for said scraper.

23', In a device of the class described, a cup provided with a bearing, a scraper, a gear positioned within the bearing, a scraper operating member cooperating with the gear, a scraper stem fitted removably in the gear, a shoulder on said stem, and a scraper retaining element supported in the bearing and coiiperating with said shoulder.

24. In a device of the class described, a cup. provided with a bearing, a scraper, a gear positioned within the bearing, a scraper operating member cooperating with the gear, a scraper stem fitted removably in the gear, a grooved collar on said stem, said collar being positioned in the bearing, and a scraper retaining screw operating in. the groove of said collar,

25.. In a device of the class described, a cup provided with a bearing, a scraper, a gear positioned within the bearing, a scraper operating member cooperating with the gear, a scraper stem fitted removably in the gear, a collar on said stem, a screw operating in connection with the collar to retain the scraper in the cup, and means for precluding accidental removal of the screw from said bearing.

26.. In a device of the class described, a cup, a bearing provided with an axial opening and a transverse opening, a gear incased within the axial opening of the bearing, a lever operated rack slidable in the transverse opening and cooperating with the gear for retaining it within the bearing, a scraper, a scraper stem fitted removably in the gear, and means cooperating with the scraper stem for retaining the scraper in the cup, said retaining means being independent of the rack and the gear.

27. In a device of the class described, a cup provided with a bearing, a gear incased therein, said gear having a polygonal opening, a scraper, a polygonal scraper stem fitted removably in the opening of said gear, a lever operated member cooperating with the gear, and scraper retaining means mounted on the bearing and operatively related to said stem, said scraper retaining means being independent of the gear and the lever operated member.

28. In a device of the class described, a

frame, a cup, a scraper, a scraper operating lever fulcrumed intermediate the ends of the frame, a spring for moving the lever in one direction, a boxing separate from the lever and incasing only the spring and the lever pivot, said boxing being removable without disturbing the operative relation of the spring to the lever or a like relation of the lever to the frame, means for retaining the boxing in position, a rack pivoted to the lever, and a gear meshing with the rack for imparting rotative movement to the scraper.

29. In a device of the class described, the combination of a frame, a cup, a scraper, a scraper operating lever provided with a post by which said lever is pivoted intermediate the ends of the frame, a spring cooperating with the post for moving the lever in one direction, a boxing separate from the lever and frame, said boxing incasing only the post and the spring, a reciprocating rack positioned externally of the boxing, and pivoted to the lever, a gear meshing with the rack for imparting rotary movement of the scraper, and means separate from the scraper operating means for retaining the scraper removably within the cup, said scraper being removable from the cup without affecting the operative relation of the several parts of the scraper operating mechanism.

30. In a device of the class described, the combination of a frame, a cup, a scraper, a scraper operating lever provided with a post by which said lever is pivoted on the frame intermediate its ends, a spring coiled around the post and having one of its ends operatively connected thereto for retaining it in one direction. a boxing separate from the lever and frame and the post, and incasing the spring and the post, and means for rigidly attaching the boxing to said post.

31. In a device of the class described, a frame, a cup, a scraper, a scraper operating lever provided with a post by which said lever is pivoted on the frame, a coiled spring operatively related to the post, a boxing separate from the frame, lever and post and incasing the post and spring, and means on the post for retaining the boxing removably in position.

32. In a device of the class described, a frame, a cup, a scraper, a scraper operating ever provided with a post by which said lever is pivoted on the frame, a coiled spring operatively related to the post, a boxing separate from the frame, lever and post and incasing the post and spring, and a retaining screw attached removably to the post for retaining the boxing in position.

33. In a device of the class described, the combination of a frame, a cup, a scraper, a scraper operating lever provided with a post by which said lever is pivoted on the frame, said post having a transverse slot extending for a portion of its extent from the free end of the post, a coiled spring having one end attached to the slotted portion of the post, a boxing incasing the spring and post, and means cooperating with the post for simultaneously retaining the boxing and spring in position.

34. In a device of the class described, a

frame provided intermediate its ends with a lever supporting arm, a cup, a scraper, a scraper operating lever positioned for sidewise engagement with said arm, a post rigid with said lever and operating to pivot the lever on the arm, a spring cooperating with the post and the arm, a boxing separate from the lever, said boxing incasing the spring and the post, and means pivotally secured to the lever for actuating the scraper.

35. In a device of the class described, a frame, a cup, a scraper positioned within said cup and removable therefrom. a so aper operating lever pivoted on the frame, a stop device for arresting the movement of said lever in one direction, a spring acting on the lever to move it in the direction in which it is operated by the stop device, operative connections between the lever and the scraper, and means independent of the scraper operating means for retaining the scraper within the cup, whereby the scraper may be removed without relaxing the tension of the spring.

36. In a device of the class described, a frame, a cup thereon, a scraper, a scraper operating lever, a post rigid with the lever, a stop device for said lever, said post having a slot, and a spring one end of which engages with the slot in the post, the slot in the post being of such length that the lever may be adjusted to clear the stop de vice without disengaging the spring.

37. In a device of the class described, a frame, a cup thereon, a scraper, a scraper operating lever provided with a stop, a post movable with the lever, and a sprlng cooperating with the post to permit the lever to be shifted laterally of the frame, whereby the stop may clear the frame while the spring remains in engagement with the lever.

38. In a device of the class described, the combination of a cup theinterior of which forms a material receiving chamber, a scraper positioned for rotary movement within the material receiving chamber,

means for rotating said scraper, a hub fixed to the scraper and rotatable therewith, said hub being independent of the scraper operating means, and retaining means cooperating with the hub for the purpose of maintaining the scraper in position within the material receiving chamber, said retaining means being entirely independent of the scraper operating means in carrying out its function. I

39. In a device of the class described, the combination of a cup the interior of which forms a material receiving chamber, said cup being provided at its bottom with a, secondary chamber separate and independent of the material receiving chamber, a scraper positioned within the material receiving chamber, means for imparting rotative movement to the scraper,- and cooperating retaining devices for precluding the dis placement of the scraper from the cup, said retaining device embodying an annularly grooved member incascd within the second ary chamber, and another member, separate and independent of the scraper operating means, cooperating with the casing of the secondary chamber and the annularly grooved member.

40. In a device of the class described, the combination of a cup the interior of which forms a material receiving chamber, said cup being provided at its bottom with a secondary chamber separate and independent of the material receiving chamber, a scraper positioned within the material receiving chamber, means for imparting rotative movement to the scraper, and 00- operating retaining devices for precluding the displacement of the scraper from the cup, said retaining devices embodying an annularly grooved member inc'ased within the secondary chamber, and a pin eXtending inwardly from the wall of said chamber so as to normally protrude into the groove of said chamber.

4L1. In a device of the class described, the combination of a cup, a scraper positioned therein, a pinion associated with said scraper, a rack cooperating with said pinion for imparting rotative' movement to the scraper, means for operating said rack, a grooved hub rotative with the scraper, and a relatively stationary retainer supported by the cup and engaging with the grooved hub, said scraper being removable from the cup wnile the scraper operating means is left intact.

42 In a device of the class described, the combination of a cup, a scraper positioned therein, a pinion associated with said scraper, a rack cooperating with said pinion for ii'nparting rotative movement to the scraper, means for operating said rack, a hub rotative with the scraper, and a5 scraper retainer separate from the scraper rotative means and independent of said scraper rotative means for the carrying out of its function, said retainer being directly sup ported on the cup and cooperating with the hub for precluding the displacement of said scraper relative to the cup.

43. In a device of the class described, a cup provided with a chambered boss, a scraper positioned within said cup, a gear housed within the chamber of said boss, means for detachably connecting said scraper and the gear, a rod guided in the boss, said rod being operatively connected to the gear for imparting rotative movement thereto and said rod operating to retain the gear within the chambered boss upon the withdrawal of the scraper, and a finger lever for operating the rod.

44:. In a device of the class described, a cup provided with a chambered boss, a scraper, a gear positioned in the chamber of said boss, means cooperating with the gear for imparting rotative movement thereto and for retaining said gear within the chambered boss upon the withdrawal of the scraper from the cup, and a scraper stem fitted detachably in the gear.

45. In a device of the class described, a cup provided with a chambered boss, a scraper, a gear positioned in the chamber of said boss, means cooperating with the gear for imparting rotative movement thereto and for retaining said gear within the chambered boss upon the withdrawal of the scraper from the cup, means for operatively and detachably connecting the scraper to the gear, and retaining means for normally maintaining the scraper in operative position within the cup, said retaining means being entirely distinct from and independent of the means for connecting the scraper to the gear;

46; In a device of the class described, a frame, a cup provided with a boss, said boss having a guide opening and a chamber, a rack slidable in the guide opening, a gear positioned within said chamber, said gear having a flange cooperating with the rod for retaining the gear within said chamber, a cup on the frame, a scraper positioned within the cup, means for connecting the scraper detachably with the gear, means for retaining the scraper in position within the cup, said retaining means being separate from the gear and the rack and being operable for the removal of the scraper independently of the gear, and a finger lever connected to the rod for operating the lever.

47. In a device of the class described, a cup provided with a chambered boss, a gear incascd within said boss, a scraper having a stem fitting in the gear, a hub rigid with the scraper, said hub being also incascd within the boss, means for locking the hub and gear for rotative movement, means for operating the gear, and means cooperating with the hub for retaining the scraper 1n 1 operative position within the cup, said means being independent of the scraper operating means in the carrying out of its function and being operable to release the hub, thereby allowing the withdrawal of the scraper from the cup.

48. In a device of the class described, a cup provided with a chambered boss, a gear incased by said chambered boss, means for operating said gear, a scraper, means for securing an interlocking connection of the scraper to the gear, means for imparting rotative movement to the gear, and means supported on the cup for retaining the scraper in operative relation to the gear, said retaining means being independent of the scraper operating means in the carrying out of its function and being operable to release the scraper to allow of its withdrawal from the cup.

49. In a device of the class described, a cup provided with a chambered boss, a scraper rotatable within said cup, a hub rigid with said scraper, a gear incased within the chamber of said boss, said gear being rotatable therein, means for detachably locking the scraper hub to said gear for rotative movement therewith, means for imparting rotative movement to the gear, and means independent of the scraper operating means for detachably retaining the scraper in operative relation to the gear, said retaining means being independent of the scraper operating means in the carrying out of its function and operable to release the scraper from the gear, thereby allowing the scraper to be withdrawn from the cup.

50. In a device of the class described, a cup provided with a chambered boss, a flanged gear incased within the chamber of said boss, a scraper rotatable within the cup, means for detachably connecting the scraper to the gear, scraper retaining means cooperating with the boss and independent of the gear in the carrying out of its function, and a reciprocating rod for operating said gear, said rod cooperating with the flange of said gear for retaining the latter within the boss upon the withdrawal of the scraper.

51. In a device of the class described, a cup provided with a chambered boss, a scraper, a gear positioned in the chamber of said boss, means cooperating with the gear for imparting rotative movement thereto and for retaining said gear within the chambered boss upon the withdrawal of the scraper from the cup, and means for operatively connecting the scraper with the gear.

52. In a device of the class described, the combination of a frame, a cup, a scraper therein, a scraper operating lever pivoted to the frame and provided with a stop cooperating with said frame to limit the movement of said lever in one direction, a post movable with the lever, a spring attached to the post to rotate it in one direction, a boxing separate from the lever, frame and post for incasing the spring and post, and means for simultaneously retaining said boxing and spring in operative relation to the post.

53. In a device of the class described, the combination of a frame, a cup, a scraper positioned within the cup, a scraper operating lever, a post mounted on said lever intermediate-its ends and cooperating with an aperture in the frame, whereby said lever is pivotally mounted on said frame, a spring coiled about the post and having one end thereof entering a slot in the post and the other end fixed against movement relative to the frame for the purpose of impelling the lever in one direction, a boxing separate from the lever, frame and post, and a threaded member adapted to be screwed into a threaded tap extending longitudinally of the post for the purpose of simultaneously securing the lever, spring and boxing to the frame.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN WALKER.

Witnesses:

M. E. FREEMAN, J. F. MOTHERSHEAD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

